How to get the selected dropdown value using jQuery - php

Question

I want to get the selected value in dropdown for edit. But I got all the values in dropdown are selected.
function getinstruments() {
var model=$('#model').val();
var brand=$('#brand').val();
brand = brand.split('%') ;
model = model.split('%') ;
$.getJSON("{!! URL::route('appraisal.getinstrument') !!}", {brand: brand[0],model:model[0]}, function(data) {
if(data.success)
{
$('select[name="sub_model"]').find(":selected").html(data.sub_models_array);
$('select[name="color"]').find(":selected").html(data.colors_array);
$('select[name="top"]').find(":selected").html(data.top_array);
$('select[name="neck"]').find(":selected").html(data.neck_array);
}
});
}
Don't know what the problem with this code is. Reply of the question is highly appreciated
<div class="col-lg-6 col-xsm-6">
<h4>Enter Body wood details</h4>
<div class="form-group">
<label>Top Wood</label>
<select name='top_wood' class='form-control' placeholder ='Enter Top wood' id='top'>
<option value=''>Pick a topWood</option>
</select>
</div>
<div class="form-group">
<label>Back Woord</label>
<select name='back_wood' class='form-control' placeholder ='Enter Back wood' id='back'>
<option value=''>Pick a topWood</option>
</select>
</div>
<div class="form-group">
<label>Neck Wood</label>
<select name='neck_wood' class='form-control' placeholder ='Enter Neck wood' id='neck'>
<option value=''>Pick a NeckWood</option>
</select>
</div>
<div class="form-group">
<label>Select color</label>
<select name='color' class='form-control' id='color' >
<option value=''>Pick a color</option>
</select>
</div>
<div class="form-group">
<label>Frets</label>
<select name='frets' class='form-control' placeholder ='Enter Frets' id='frets'>
<option value=''>Pick a Fingerboard Material</option>
</select>
</div>
<div class="form-group">
<label>Turner</label>
<select name='turner' class='form-control' placeholder ='Enter Turner' id='turner'>
<option value=''>Pick a Fingerboard Material</option>
</select>
</div>
this is my view file where i want selected value of dropdaown